Cool, Thanks Rick. Now I can go back to just owning one coolant. I must
say I will not miss the staining caused by the orange, which is another
difference between the two.
As a purely academic question...If an engine has been sitting, say for 10
years without coolant would the orange work fully or are the residuals still
there from the green?
James Nazarian
71 B tourer
71 BGT V8
85 Dodge Ram
----- Original Message -----
From: Rick Fisk <refisk@chartermi.net>
To: MG List <mgs@autox.team.net>
Sent: 01 March, 2003 9:41 AM
Subject: Re: Coolant
> James,
>
> The green stuff is safe for aluminum engines and works great - as long as
> you change it every two years. The green stuff has a silicate type
> corrosion inhibitor added that is sacrificial. After a couple of years
the
> corrosion inhibitors are basically gone. The orange stuff has an organic
> acid based corrosion inhibitor that is basically good forever. The big
> problem may be that if you had green in your system and then drained it
and
> installed orange the residue from the green will have nullified the
> corrosion protection of the orange. The silicates from the green
> contaminate the orange and it's corrosion protection is reduced.
>
> I gleaned this info from another forum I subscribe to - it was posted by a
> GM engineer with much design experience on aluminum engines.
>
> Rick
> '59 Sprite
> '65 MGB
> '90 Allante
>
> ----- Original Message -----
> From: "james" <jhn3@uakron.edu>
> To: "Bullwinkle" <yd3@nvc.net>
> Cc: <mgs@autox.team.net>
> Sent: Saturday, March 01, 2003 2:49 AM
> Subject: Re: Coolant
>
>
> > Blake, are you saying that the green stuff is safe for aluminum?
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